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Vulnerability Alert

Cisco Unified Computing System IPMI Buffer Overflow Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:29029
Version:1
First Published:2013 April 24 16:26 GMT
Last Published:2013 April 24 16:26 GMT
Port: 623
CVE:CVE-2013-1183
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:10.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:8.3
Related Resources:
View related Security Advisory
 
 
Version Summary:Cisco Unified Computing System Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
 
 
Description
A vulnerability in the Intelligent Platform Management Interface (IPMI) implementation of Cisco Unified Computing System (Cisco UCS) Software could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to improper handling of overly large values in requests processed by the affected software. An unauthenticated, remote attacker could exploit the vulnerability by sending malicious requests to the targeted system.

Cisco has confirmed the vulnerability in a security advisory and has released software updates.
 
Warning Indicators
The following Cisco UCS Software versions are affected:
  • All 1.0 versions
  • Versions prior to 1.1(1j)
  • Versions prior to 1.2(1b)
 
IntelliShield Analysis
To exploit the vulnerability, an attacker must send UDP requests on port 623 to the targeted system. An attacker may require access to internal networks to send requests to a targeted system, increasing the difficulty of an attack.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
 
Vendor Announcements
Cisco has released a security advisory for Cisco bug ID CSCtd32371 at the following link: cisco-sa-20130424-ucsmulti
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system with elevated privileges, which could result in a complete system compromise.
 
Technical Information
The vulnerability is due to improper validation of input contained in requests processed by the IPMI implementation in Cisco UCS Software.

An unauthenticated, remote attacker could exploit this vulnerability by sending malicious requests containing overly large values to the IPMI service via UDP port 623. Processing the overly large values could cause a buffer overflow condition. The attacker could use the buffer overflow condition to execute arbitrary code on the targeted system with elevated privileges.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: Identifying and Mitigating Multiple Vulnerabilities in Cisco Unified Computing System

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com.
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco Unified Computing System (Managed) 1.0 Base, (2k) | 1.1 Base | 1.2 Base

Associated Products:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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